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Acoustic Lens is Gas-Filled

$1.25

A novel acoustic lens is fabricated by clamping together two membranes of thin plastic and filling the enclosed space with a flourocarbon gas. In tests, the lens substantially improved the accuracy of sound "maps" of turbulent airflow. It could be used to record sound-intensity patterns in the design of speakers, lecture halls, and auditoriums. NASA Tech Brief. 8.5" x 11"